html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}


/* 背景图片 */

body {
    background: url(../images/bg.jpg) no-repeat 0 0 /cover;
}


/* /登录的盒子 */

.box {
    width: 360px;
    height: 300px;
    background-color: #fff;
    position: absolute;
    left: 50%;
    top: 40%;
    margin-left: -180px;
    margin-top: -100px;
}


/* 登录的表单 */

.layui-form {
    margin: 0 30px;
}

.box .box_title {
    text-align: center;
    letter-spacing: 2px;
    padding: 14px 0;
    height: 60px;
    background: url(../images/login_title.png)no-repeat center center;
}


/* 字体图标 */

.layui-form-item {
    position: relative;
}

.layui-icon {
    position: absolute;
    top: 10px;
    left: 10px;
}


/* 表单里input标签 */

.layui-input {
    padding-left: 36px;
}

.layui-form-item .layui-btn {
    position: absolute;
    top: 10px;
}